What was the medical significance of the discovery of antibiotics?
a. antibiotics kill disease-causing organisms.
b. antibiotics kill all living organisms.
c. antibiotics can get into the blood stream.
d. antibiotics can prevent infections.

The presence of aids in a community often increases its level of property what is one of the main reasons for this

Group of genes that encode molecules found in all body cells, creating a biochemical “fingerprint” that serves as the “id” for cells so that they are marked as “self” a) deoxyribonucleic acid (dna) b) entry inhibitors c) major histocompatibility complex (mhc) d) non-nucleoside reverse transcription inhibitors (nnrtis)

The average ages at which an individual displays certain abilities are known as